The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2009
Filed:
Apr. 09, 2003
Dieter Starosta, Schwarzheide, DE;
Peter Pfab, Schwarzheide, DE;
Volker Krase, Lauchhammer, DE;
Andreas Schmidt, Schwarzheide, DE;
Matthias Kloetzer, Kroppen, DE;
Andreas Otterbach, Tervuren, BE;
Dieter Starosta, Schwarzheide, DE;
Peter Pfab, Schwarzheide, DE;
Volker Krase, Lauchhammer, DE;
Andreas Schmidt, Schwarzheide, DE;
Matthias Kloetzer, Kroppen, DE;
Andreas Otterbach, Tervuren, BE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A reactor for the thermal cleavage of monofunctional and/or polyfunctional carbamic esters into the corresponding isocyanate and hydroxyl components in the liquid phase having devices for introduction of heat into the reactor, where the devices are heat exchanger plates through which a heat transfer medium flows and have a geometry defined by the ratio of the degassing area to the volume and arrangement of the heating surfaces which makes it possible for the cleavage to be carried out in a two-phase mixture which has a gas content of over 50% by volume.